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Título : Resonant phenomena in extended chaotic systems subject to external noise: The Lorenz'96 model case
Autor : Revelli, Jorge A.; Rodríguez, Miguel A. ; Wio, Horacio S.
Palabras clave : Chaotic dynamics
Statistical mechanics
Atmospheric and oceanic physics
Fecha de publicación : 2008
Editor: Elsevier
Citación : Physica A: Statistical Mechanics and its Applications 387(13): 3103-3110 (2008)
Resumen: We investigate the effects of a time-correlated noise on an extended chaotic system. The chosen model is the Lorenz'96, a kind of "toy" model used for climate studies. Through the analysis of the system's time evolution and its time and space correlations, we have obtained numerical evidence for two stochastic resonance-like behavior. Such behavior is seen when both, the usual and a generalized signal-to-noise ratio function are depicted as a function of the external noise intensity or the system size. The underlying mechanism seems to be associated to a "noise-induced chaos reduction". The possible relevance of these and other findings for an "optimal" climate prediction are discussed.
Descripción : arXiv:0706.1672v1
Versión del editor: http://dx.doi.org/10.1016/j.physa.2008.01.110
URI : http://hdl.handle.net/10261/3834
DOI: 10.1016/j.physa.2008.01.110
ISSN: 0378-4371
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